login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A089458 Number of n-celled polyominoes with exactly 6 holes. 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 2131, 38022, 480713 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,23

LINKS

Table of n, a(n) for n=1..26.

Tomás Oliveira e Silva, Animal enumerations on the {4,4} Euclidean tiling

CROSSREFS

Cf. A001419, A057418, A089454, A089455, A089456, A089457.

Sequence in context: A035801 A239739 A017727 * A283280 A082559 A008790

Adjacent sequences:  A089455 A089456 A089457 * A089459 A089460 A089461

KEYWORD

hard,nonn

AUTHOR

Joseph Myers, Nov 04 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 17 06:45 EST 2018. Contains 318192 sequences. (Running on oeis4.)